I know of a decent and cheap photographer in Milton Keynes. He works from his house just of Junction 14 so is fairly easy to get too if you're travelling. He charges ?50 for a shoot, including 5 photos I think it's about ?2-?5 per extra photo. Or if you want to pair up with another girl he does the same for ?25 each. His website is http://www.isphotos.co.uk
Hope this helps xx
Edit - Forgot to mention he's done lots of escorts do he's pretty laid back and easy to get on with. His wife and kids are usually upstairs so I always feel safe.